Pesticides in California Well Water

In California, pesticides levels average 1.513 ppb, with a maximum recorded level of 3.362 ppb. The EPA limit is 3 ppb. Currently 8.7% of tested wells exceed this limit, affecting approximately 104,400 wells.

Testing for pesticides in California typically costs around $143. If treatment is needed, water treatment systems for pesticides cost approximately $3,589.

The risk level for pesticides in California is rated as moderate. The state average of 1.513 ppb is 8.7% above the national average of 1.393 ppb.